发动机航线维护智慧树知到课后章节答案2023年下中国民用航空飞行学院

发动机航线维护智慧树知到课后章节答案2023年下中国民用航空飞行学院中国民用航空飞行学院

绪论单元测试

COMACARJ21-700airlinerisequippedwith_______turbofanengine.（）

A:CJ-1000B:Leap-1CC:CF34-10AD:CFM56-7B

答案:CF34-10A

第一章测试

ThedescriptioninChapter73ofAMMisabout().

A:EngineFuelandControlSystem

B:OilSystem

C:ExhaustSystem

D:AirSystem

答案:EngineFuelandControlSystem

HowmanyenginemountsdoestheCFM56-3have?（）。

A:1

B:2

C:4

D:3

答案:2

CFM56-3isa_______turbofanengine.()

A:Highbypass,threerotor

B:Lowbypass,threerotor

C:Highbypass,dualrotor

D:Lowbypass,dualrotor

答案:Highbypass,dualrotor

ThedataplatehasNOTthedataof（）。

A:Airframetype

B:Enginemodelnumber

C:Thrustratings

D:TCNumber

答案:Airframetype

TheCFM56-3enginesupplies____fortheBoeing737-300/-400/-500aircraft.()

A:thrust,electric,hydraulic,pneumatic

B:thrust,bleedair,hydraulic,pneumatic

C:thrust,electric,hydraulic,fuelandoil

D:thrust,liftforce,hydraulic,pneumatic

答案:thrust,electric,hydraulic,pneumatic

第二章测试

WhichcomponentonCFM56-3engineproducesthemostthrust?()

A:Fan

B:Turbine

C:Combustor

D:Exhaustnozzle

答案:Fan

Theaerodynamicstationof12onCFM56-3engineis().

A:Theinletofbooster

B:Thesecondaryairinlet

C:Theprimaryairinlet

D:Theengineinlet

答案:Thesecondaryairinlet

WhichbearingcanholdtheaxiallyloadoftheN2rotor?()

A:No.3ballbearing

B:No.1ballbearing

C:No.2ballbearing

D:No.4rollerbearing

答案:No.3ballbearing

WhatbearingsonCFM56-3enginearerollerbearing?()

A:No.3,No.4andNo.5bearings

B:No.2,No.3andNo.4bearings

C:No.1,No.2andNo.3bearings

D:No.2,No.4andNo.5bearings

答案:No.2,No.4andNo.5bearings

Thepowersourcefordrivingfanandboosterrotorisfrom().

A:CSDassembly

B:HPT

C:Air-drivinggearbox

D:LPT

答案:LPT

TheairusedforCFM56-3HPTbladescoolingis().

A:HPC5thair

B:HPC4thair

C:Boosterdischargeair

D:CDPair

答案:CDPair

HowmanyfanbladesdoesCFM56-7Benginehave?()

A:38

B:24

C:18

D:36

答案:24

WhichbalancingscrewfortherebalanceofCFM56-3engineisthelightest?()

A:P07

B:P06

C:P01

D:P08

答案:P07

InthefollowingaccessorypadsonCFM56-3engine,whichoneneedtousecarbonseal?()

A:Lubeunitandhydraulicpump

B:Airstarterandhydraulicpump

C:Controlalternatorandfuelpump

D:Lubeunitandfuelpump

答案:Airstarterandhydraulicpump

HowmanystagesofLPTdoesCFM56-3enginehave?()

A:2

B:1

C:3

D:4

答案:4

第三章测试

Inthefollowingdescriptions,whichoneisNOTthefunctionofMEConCFM56-3engine?()

A:Schedulesfuelflow

B:SchedulestheLPTCCvalve

C:SchedulesVSV’sandVBV’spositions

D:SchedulestheHPTCCvalve

答案:SchedulestheLPTCCvalve

What’sthemainpurposeoftheservofuelheateronCFM56-3engine?()

A:Toincreasethecombustionfueltemperature

B:Todecreasethescavengeoiltemperature

C:Todecreasethesupplyoiltemperature

D:Toincreasetheservofueltemperature

答案:Toincreasetheservofueltemperature

InthefollowingfuelnozzlesonCFM56-3engine,whichonemusthavearicherprimaryflowpath?()

A:fuelnozzlepositions14and15

B:fuelnozzlepositions1and20

C:fuelnozzlepositions4and5

D:fuelnozzlepositions1and2

答案:fuelnozzlepositions14and15

What’stheFail-SafesettingofT2.5sensoronCFM56-3engine?()

A:14.7PSI/15℃

B:59℉/15℃

C:36℉/0℃

D:760mmHg/15℃

答案:59℉/15℃

TheCFM56-3enginesymptomsforaT2.5coldshiftare().

A:PossibleN1overshoot/bloomontakeoff

B:PossiblycannotgettakeoffpowerwithhighN2andEGT

C:VSVtrackclosedVBVtrackopen

D:Slowstartsandaccelerations

答案:PossibleN1overshoot/bloomontakeoff

T2.0sensoronCFM56-3enginesuppliesfuelpressure_________totheMECinproportiontotheFIT.()

A:P7-Pb

B:P7-P6

C:Pc-Pb

D:P6-Pb

答案:P7-Pb

WhichofthefollowingsignalsgoesintoPMCthroughtheJ2connector?()

A:Electricalpowerfromcontrolalternator

B:Groundsupportequipment

C:PS12

D:N1andT12

答案:Electricalpowerfromcontrolalternator

HowmanythrottlepositionsdoesB737-300aircrafthavewhenCFM56-3engineisatidlespeed?()

A:Two

B:Onlyone

C:Three

D:Four

答案:Onlyone

HowthePMCofCFM56-3engineknowsthethrustleverangle?()

A:N2controlalternatorontheAGBsendsanelectricalpowertoPMC

B:aRVDTincockpitsensesthePLAandsendsanelectricalsignaldirectlytoPMC

C:aRVDTinMECsensesthePLAandsendsanelectricalsignaltoPMC

D:aLVDTincockpitsensesthePLAandsendsanelectricalsignaldirectlytoPMC

答案:aRVDTinMECsensesthePLAandsendsanelectricalsignaltoPMC

WhatequipmentcantransfertheelectricalsignalfromPMCintoservofuelsignalinMECofCFM56-3engine?()

A:AnEHSVonMEC

B:SixEHSVsonHMU

C:ApilotvalveinMEC

D:AtorquemotoronMEC

答案:AtorquemotoronMEC

第四章测试

HowmanyigniterplugsdoesCFM56-3enginehave?()

A:3

B:5

C:2

D:4

答案:2

TheCONTpositionsuppliescontinuouspowertotheignitionexcitersduring().

A:flight

B:aircraftontheground

C:enginerestartintheflight

D:enginestartontheground

答案:flight

WhichoneisTRUEinthefollowingdescriptionsabouttheignitionsystemofCFM56-3engine?()

A:Donotapplygreasetothethreadsontheignitionleadendoftheigniterplug.

B:TheLow-energyexciteroutputis1sparkpersecond,1joulesperspark.

C:Thereisnoneedtoprovidecoolingairaroundtheignitionleadstodecreasetemperature

D:Onlyneedonegasketcontrolsthedepththeigniterplugsgointothecombustionchamber.

答案:Donotapplygreasetothethreadsontheignitionleadendoftheigniterplug.

OnCFM56-3engine,high-energyexciteroutputis().

A:1sparkspersecond,2joulesperspark

B:1sparkspersecond,1joulesperspark

C:2sparkspersecond,2joulesperspark

D:2sparkspersecond,1joulesperspark

答案:2sparkspersecond,2joulesperspark

WhataretheinputoftheignitionexcitersoftheCFM56-3?

A:28VDC.

B:230VACinput.

C:

14－20KVinput.

D:

115VACinput.

答案:

115VACinput.

第五章测试

HowmanyVSVactuatorsdoesCFM56-3have?()

A:10

B:20

C:2

D:1

答案:2

What’sthefeedbackequipmentofVSVandVBV’spositiontotheMECofCFM56-3engine?()

A:RVDTandelectricalcable

B:LVDTandelectricalcable

C:Arm,leverandflexibleshaft

D:Resolverandflexiblecable

答案:Arm,leverandflexibleshaft

WhenCFM56-3engineisstartingoratidlespeedcondition,theVBVdoorsis().

A:atanypositon

B:halfopened

C:closed

D:opened

答案:opened

TheVBVsystemofCFM56-3engineisoperatedby().

A:thefuelgearmotor

B:thehydraulicpump

C:twofuelactuators

D:theoilscavengepump

答案:thefuelgearmotor

WhentheCFM56-3engineisrunningatCRUISE,whereisthecoolingairfortheHPTCCfrom?()

A:9thHPC

B:CBP

C:5thHPC

D:5th+9thHPC

答案:5thHPC

第六章测试

TherearvibrationsensorofCFM56-3engineislocatedon().

A:NO.2bearingsupport

B:the3o’clockpositionoffanframe

C:NO.1bearingsupport

D:the12o’clockpositionofturbineframe

答案:the12o’clockpositionofturbineframe

WhichspeedsignalsofCFM56-3enginedoesAVMsystemneed?()

A:AVMsystemdoesn’tneedspeedsignals

B:N1andN2

C:N2

D:N1

答案:N1andN2

TheEGTindicatingsystemsuppliestheflightcompartmentwiththeEGTasthegasflowsthroughthestage2LPTnozzle.()

A:average

B:lowest

C:highest

D:true

答案:average

HowmanythermocouplesdoestheEGTindicatingsystemofCFM56-3enginehave?()

A:10

B:11

C:8

D:9

答案:9

WhichvibrationsignalwillbesenttotheflightcompartmentforeachengineonB737-300aircraft?()

A:thestrongestvibrationsignal

B:thecore’svibrationsignal

C:thefan’svibrationsignal

D:thelowestvibrationsignal

答案:thestrongestvibrationsignal

第七章测试

InthefollowingdescriptionsabouttheoilsystemofCFM56-3engine,whichoneisTRUE?()

A:TheoilsumpsareDry-Sumpdesigned

B:Theoilquantitycanbegotfromthesightglassoftheoiltank

C:Noneoftheabove

D:Theoiltankisventedtotheambientairdirectly

答案:TheoilsumpsareDry-Sumpdesigned

WhatairsourceisusedtopressurizerearsumpinCFM56engines?()

A:Fandischargeair

B:CBPair

C:Boosterdischargeair

D:the5thbleedairfromHPC

答案:Boosterdischargeair

TheoilcoolerofoilsystemonCFM56-3enginearelocatedin().

A:theoiltank

B:theoilscavengecircuit

C:theoilsupplycircuit

D:theAGB

答案:theoilscavengecircuit

HowmanyoilpumpsdoesCFM56-3’soilsystemhave?()

A:3

B:1

C:4

D:2

答案:4

OnCFM56-3engine,theoiltemperatureindicatesthepressureof().

A:Oilsupply.

B:Oiltank.

C:Oilscavenge.

D:Oilventing.

答案:Oilscavenge.

第八章测试

Howlongcanbethestarteroperatedcontinuouslyupto?()

A:oneminute

B:fourminutes

C:twominutes

D:threeminutes

答案:twominutes

DuringstartingofCFM56-3engine,thelimitformaximumexhaustgastemperature(EGT)is().

A:600℃

B:725℃

C:725℉

D:600℉

答案:725℃

DuringtakeoffofCFM56-3engine,thelimitformaximumexhaustgastemperature(EGT)is().

A:600℉

B:930℃

C:930℉

D:600℃

答案:930℃

EGTistheshortfor().

A:Exhaustgroundthrust

B:Enginegroundthrust

C:Enginegastemperature

D:Exhaustgastemperature

答案:Exhaustgastemperature

WhenCFM56-3engineisatidlespeed,theminimumoilpressureis().

A:13PSI

B:30PSI

C:27PSI

D:23PSI

答案:13PSI

第九章测试

Inthefollowingdescriptions,whichoneisthefunctionofHandCrankingPadintheAGBofCFM56-3engine?（）

A:BalancethelowpressuresystemB:Let’stheoperatorrotatethecoreduringmaintenanceC:Let’stheoperatorrotatethefanrotorduringmaintenanceD:Let’stheoperatorrotatethecoreduringstart

答案:Let’stheoperatorrotatethecoredurin